Damper.



J. BONE.

DAMPER.

APPLICATION FILED MAR.10, 1911. 1. ,09 3 1 67, Patented Apr. 14, 19%

A 03a YA? K ll Wfifi f W fiineasfi v dw?i% uijz l JAMIESON BONE, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO CLIFFORD M. TYLER, OF BROOKLINE, MASSACHUSETTS.

DAMPER.

To all whom it may concern Be it known that I, JAMIEsoN BONE, of Boston, in the county of Suifolk and State of Massachusetts, have invented a new and useful Damper, of which the following is a specification.

The objects of my invention are to provide an improved mounting of a damper for fireplaces and improved operating means therefor, and my invention consists primarily in a damper mounted at its front edge and consists also in means for holding the damper in the desired position and also in various other features pointed out below.

In the drawings Figure 1 is a central vertical section of a device embodying my invention; Fig. 2 is an elevation of the rear of my damper; and Fig. 8 is a plan of the same. 7

The ordinary tiling is indicated at A and the brickwork atA', B being the fireplace and C the flue leading to a chimney.

Mounted 011 the brickwork is a frame or support preferably in one piece consisting of a base portion D with an opening E, two substantially vertical side walls F and F, a cross bar G extending from the top of one side wall to the top of the other side wall, a flange H to engage the front edge of the damper, and a track K having guides 70 7c at each side.

Damper L, when closed as in Fig. 1, covers the opening E in base D. At its front or outer edge the damper rests upon base D and against flange H and it has a tongue 72. to enter notch h in said flange to prevent endwise movement of the damper and also normally to prevent the damper slipping inwardly off of base D. At the rear edge, near the middle, the damper is connected to chain M which passes over pulley m, the latter being journaled at the upper end of the track K. The chain is then connected by a two-armed piece of wire m to a roller weight N so that the weight may turn 011 the piece of wire as a pivot as the weight moves on the track K upon which it is guided by guides 72 7c.

Upon the inner side of the damper upon its front or forward edge is finger-piece Z, which is readily accessible for the purpose of moving the damper to the desired position and also to push the damper inwardly Specification of Letters Patent.

Application filed March 10, 1911.

Patented Apr. let, 1914-. Serial No. 613,543.

off of the outer edge of base D so that the damper may be lowered into the fireplace for cleaning and such moving and pushing are accomplished without danger of soiling the garments by soot or the like which would be present if one had to reach into the flue to accomplish such moving and pushing.

I prefer to build the brickwork at P so that it extends farther into the flue than the rear end of the damper when the latter is completely open, as indicated in dotted lines in Fig. 1, to avoid accumulation of soot between the damper and brickwork. I also prefer to have the brickwork R rest upon the rear of the base I) and to have the face of such brickwork parallel with the damper when the latter is open. This arrangement may be had by reason of mounting my damper at the front edge and the advantage is that I provide an uncontracted flue space and avoid any pockets which may cause harmful differences in temperature above the fireplace.

In using my device the damper may be opened as much as desired within the ordinary limits by swinging on its front edge either by use of finger-piece Z or otherwise and will be automatically held in whatever position it may be by the action of the counterbalancing roller weight and by the friction of the chain on the pulley.

Among the advantages due to my invention I may point out that the damper is readily operable by hand; that the damper is readily removable for cleaning; that on account of the damper being hinged at the front all smoke will be directed into the flue by the damper when opened instead of being partially deflected as heretofore; that the roller weight is always out of the path of the damper; that my damper will automatically remain in whatever position it may be put; that there are no metal hinges of the damper to become clogged; that the damper in its open position is protected from the accumulation of soot and that the horizontal position of the damper when closed makes it easily accessible for removal. Other advantages will be clear from the above description.

It will be clear that my device may be used as a ventilator as well as in connection with a fire. In such case the element which 7 said walls throughout the swing of the clamper and the'other entire side edge of the damper being adjacent to the inner side of the other of said walls throughout the swing of the damper; and means supported by the cross-bar for balancing the damper in any desired position within its range of swing.

2. In a device of the character described the combination of a support; a damper mounted at its front edge to swing on the support; and a finger-piece to move the damper, said finger piece being connected directly to the damper and extending forward from the damper itself in front of said edge so as to be readily accessible in whatever position the damper may be.

3. In a device of the character described the combination of a damper mounted to swing; a roller weight to balance the damper; a flexible member connected with the damper and connected with the weight so as to permit the latter to roll; and a track out of the path of the damper upon which the weight rolls.

4. In a device of the character described the combination of a damper mounted to swing; a roller weight to'balance the damper; a member connected at one end to the damper and at the other end to the weight so as to permit the latter to roll; a track upon which the weight rolls; and a guide tokeep the weight on the track. 7 r

5. A device of the character described comprising a damper mounted to swing; a chain connected at one end to the inner edge of the damper and connected at the other end with a roller weight so as to permit the latter to roll; a pulley over which the chain travels; and a track for the weight out of the path of the damper and provided at each side with guides.

6. In a device of the character described the combination of a frame comprising a base and a flange; and a damper resting on said base back of said flange and having a V tongue to engage the front edge of said flange to prevent accidental inward move ment of the damper. V V a 7 In a device of the character described the combination of a damper mounted at itsv p front edge to swing; a finger piece to open and close the damper and connected to it near its front edge; and means separate from said finger piece to balance the damperin any position within its range of swing.

JAMIESON BONE.

WVitnesses: I

CLIFFORD M. TYLER, G. A. ROCKWELL. V

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 1 

